Device for heating wound thread-bobbins.



H. A. BAT ES. DEVICE FOR HEATING WOUND THREAD BOBBINS.

APPLICATION FILED FEB. 5, 1912.

1,085,787. Patented Feb. 3, 1914;

HENRY ANSON BATES, OF MIDDLETOWN, CONNECTICUT.

DEVICE FOR HEATING VJOUND THREAD-BOBBINS.

Specification of Letters Patent.

Iatented Feb. 3, 1914.

Application field February 5, 1912. Serial No. 675,480.

To all whom it may concern Be it known that I, HENRY A. Barns, a citizen of the United States, residing at Middletown, in the count-y of MiddleseX and State of Connecticut, have invented a new and useful Improvement in Devices for Heating Vound Thread-Bobbins, of which the following is a specification.

It is customary in sewing shoes, harness parts, and the like leather goods which, when in use are subjected to considerable strain and are exposed to all kinds of weather conditions, to use heavy thread that has been waxed or similarly treated so as to increase its strength and wearing qualities. It is a common practice to warm portions of sew-- ing machines which use such a treated thread for these purposes, and also to heat the shuttles and bobbins in order to render the thread more pliable and easily manipulated.

The present invention relates to means for heating wound bobbins of thread for this purpose.

The object of the invention is to provide a very simple, cheap and efficient device which is so constructed that it can be readily applied to a steam chest or warming boX of a leather stitching machine, and into which a wound bobbin of treated thread can be easily placed and quickly removed by the machine operatcr without liability of accident to the operator, and without danger of burn ing or overheating the thread.

Figure l of the accompanying drawings illustrates a side view of a sewing-machine steamchest with a form of wound-bobbin holding-device which embodies this invention applied to the chest. Fig. 2 shows a plan of the same. Fig. 3 shows an end view', and Fig. 4: is an elevation showing the opposite side of the parts from that shown in Fig. 1.

The form of the steam chest is immaterial to the invention. The chest 1, which is illustrated, is of a type that is in common use with a well known leather sewing machine. This chest is hollow and has an inlet pipe 2 and an outlet pipe 3 for the passage through the chest of the steam which is employed primarily for keeping warm certain parts of the machine.

The bobbin holder which is illustrated is made of a single piece of thin sheet metal, such as steel, although the invention is not limited to the use of this particular material. This holder is bent to shapethe walls 4, 5 and 6 being designed to clasp and hold closely against the sides and end of the steam chest. The wall 4 of this clasping section of the device is desirably cut away so as to form a hook which will engage and rest upon the steam pipe and prevent the device from dropping. The metal from which the device shown is made, at the end of the wall 6 of the chest clasping portion, is bent out-ward and then forward so as to provide the spring finger 7 The wound bobbin of waxed thread 8 to be heated is thrust between the side wall 6, which lies closely against the side of the steam chest, and the spring finger 7. The finger is so bent that it presses the bobbin against the wall 6 and holds it tightly in order that the jar of the machine can not affect it or shake it out of place.

The form of the device which is illustrated is very cheap to make. It can be readily folded to shape of a single piece of metal so that it may be quickly applied to and caused to closely grasp the end of the steam chest, and also to firmly clasp the wound bobbin to be heated. The bobbin can be quickly thrust into the clasp of this device and removed therefrom when heated, without liability of burning the fingers of the operator. The spring finger holds the bobbin closely against the inner heated wall, and as the finger is an integral part of the device, heat is conducted thereby to the outside so that the bobbin will be uniformly heated, although not to such a degree as will cause it to become burned or overheated.

The invention is not limited to the exact shape of holding device which is illustrated, for it is obvious that the shape of the parts which clasp the boX and will grasp the bobbin may be varied according to desire and the skill of the manufacturer. The form shown, however, is preferred because it is simple, cheap and can be readily attached to a steam chest in such manner as to efficiently warm a bobbin without liability of accident.

The invention claimed is:

The combination with a heating chest of a holder for retaining wound threads bobbins, said holder being constructed of thin sheet metal bent to shape and having a wall adapted to lie against the side of the chest so as to absorb heat therefrom, having Wall and adapted to hold a wound bobbin of a part extending outwardly and backW-ardly thread against said heating Wall.

and adapted to yieldingly clasp the chest T T L T said part being provid ed with a hooked R1 ANSOB BA opening whereby it may be locked in place, itnessesz and having a spring finger extending out- J OSEPHINE M. STREMPFER 7 Wardly and forwardly from said heatlng H. R. \VILLIAMS.

(lumen of thin patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

